Extension platform attachable to a computer keyboard platform



FIG. 1 is a top plan view of an extension platform attachable to a computer keyboard platform showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top front perspective view thereof; and,

FIG. 8 is a top rear perspective view thereof. 

The ornamental design for an extension platform attachable to a computer keyboard platform, as shown and described. 